HP StorageWorks Command View XP Command Line Interface (CLI) reference guide (B9357-96161, January 2006)

Command View XP Command Line Interface (CLI) reference guide 81
create luse
Description Use this command to create expanded volumes in the disk array. Each LUSE volume can have 2 to
36 LDEVs. This command allows for the creation of only one LUSE volume in one operation.
A LUSE volume can be created in one of two modes: continuous or disperse. Optionally, one or
more paths can be defined for the LUSE.
The existing LUSE volumes can be further expanded to form a larger volume. The LDEV IDs that
would be used for further expansion need to be greater than the base LUSE volume. The device
LDEVs, which will be used for expansion, can also be LUSE volumes.
Syntax create luse <topCU>, <topLdev> -continuous <offset> | -disperse
<device_ldevs...> [-lun <port...>,<hostgrpnickname>,<lunid>]
Arguments <topCU>
The CU number of the first LDEV in the expanded volume. <topCU> must be given in
hexadecimal.
<topLdev>
The LDEV of the first LDEV in the expanded volume. <topLdev> must be given in hexadecimal
and is not case sensitive.
-continuous <offset>
Use this option to create the expanded volume in continuous mode. <offset> specifies the total
number of consecutive LDEVs that will be combined into one volume. <offset> does not
include the top LDEV. The possible range for <offset> is 1 - 35. This option cannot be used
with the -disperse option.
-disperse <device_ldevs...>
Use this option to create the expanded volume in disperse mode. <device_ldevs> specifies
the list of LDEVs to be expanded into one volume. <device_ldevs> can be a set of values or
a range of values (for example, A or 0:A:1A or 0-F). LDEVs must be given in hexadecimal and
are not case sensitive. This option cannot be used with the -continuous option.
[-lun <portname...>,<hostgrpnickname>,<lunid>]
The -lun option specifies the paths to the LUSE volume. It is not mandatory. It is possible to
create an expanded volume without any associated path.
<portname>,<hostgrpnickname>,<lunid> specify the complete path.
<portname> can be specified as one port, a set of ports, or a range of ports (for example, 1A
or 1A:1C:1D or 1A-1E). Port names must be specified in truncated form (for example, 1A and
not CL1-A) because the hyphen (-) is used to specify a range. LUN IDs must be given in
hexadecimal.
Rules for creating a LUSE volume
• The LDEVs in a LUSE volume must be in same CU.
• The LDEVs in a LUSE volume cannot already have a path.
• The LDEVs in a LUSE volume must be of the same emulation type.
• The LDEVs in a LUSE volume must be the same RAID level.
• Emulation types of the LDEVs in a LUSE volume must be OPEN-3, OPEN-8, OPEN-9, OPEN-E,
OPEN-L, or OPEN-V.
• You can combine custom volumes into LUSE volumes. However, the custom volumes must be same
size.
• LDEVs set as Auto LUN reserved volumes for cannot be used as part of a LUSE volume.
• The CU:LDEV number of a LUSE volume the CU:LDEV number of the top LDEV.
• The top LDEV must have the numerically smallest CU:LDEV number in the LUSE volume.